Threaded Bung 3 4 Inch 16 Left Hand Thread Each RockJock 4x4 TEQ RJ 576200 2 RockNut Bung (1 1 4 in. LH Thread) Threaded Bung 1 1 4 Inch 12 Right Hand Thread Each RockJock 4x4 TEQ Johnny Joint Jam Nut & Bung 1 inch 14TPI. RockJock's Threaded Bung and Jam Nut Sets have been a staple in our Johnny Joint product line since its inception in 1996! These bungs are used in many applications where a custom vehicle builder has the facilities to fabricate his own arms. All of our bungs are CNC machined from premium steel hex stock, in house, on our own machines. Hex size is kept to a minimum and a matching small hex jam nut (as opposed to the large hex of commonly available jam nuts) is included so that the hex sizes match. Our bungs are designed for use with commonly available tubing sizes so that tubing can be sourced by the builder, cut, bungs installed and welded up! RH and LH thread bung sets are available in all (larger) thread sizes, 3 4 in. 1 1 2 in. This Threaded Bung Set features a 1 1 2 in. 12 RH thread, a 2 1 4 in. hex, fits a 1 3 4 in. I. D. tube and includes the matching jam nut! Threaded Bung Set Fits: Universal Application (1 3 4 in. I. D. tube) Threaded Bung Set Includes: (1) 1 1 2 in. 12 RH thread bung (1) 1 1 2 in. 12 RH thread jam nut Threaded Bung Set Features: CNC machined steel construction (bung and jam nut) 1 1 2 in. 12 RH threads 2 1 4 in. wrench hex size (bung and jam nut) Intended for use with 2 1 4 in. x . 188 in. wall tubing (1 3 4 in. I. D. tube) Raw steel finish on bung, ready for welding Clear zinc plating finish on jam nut Notes: For use with any 1 1 2 in. 12 RH thread rod end